Salt mix with blue spots in it

[aj741986]

My buddy got out of the hobby and gave me an open bag of salt that was sitting in his garage. For some reason there are blue spots now in the mix. It got moisture in it so the outside is hard and that's where the spots are. Safe to use?

 

[AllSignsPointToFish]

If there's any question, don't use it.

It could be Tide.

 

[Coastie Reefer]

If there's any question, don't use it.

It could be Tide.

Literally my first thought LOL

 

[VB313]

Ide pass